officially supports up to [11]. Official support ended in 2023 [12], so for newer versions like Android 12, 14, or 15, you must use Custom ROMs (AOSP or LineageOS).
To restore your device to its factory state, use a firmware downloader like SamFW or Frija. download a20 android image
is Treble-compatible, you can download GSIs from the Project Treble GitHub . officially supports up to [11]
: Use the Odin Flash Tool on a PC. Put the phone in Download Mode (Hold Volume Up + Volume Down and connect to PC). download a20 android image
Hold the button on the board, apply power, and then connect the USB cable to your PC. Follow the on-screen prompts to format and write the image. BESTTAB A20 If you have the BESTTAB A20